RefineMesh gives specific unexpected results occasionally.

[mrbemani]

This happens to some photo groups.

after ReconstructMesh, the mesh file is generated correctly. as shown below:

ReconstructMesh -i dense.mvs -o mesh.mvs

but after RefineMesh, the refined mesh breaks into pieces....as shown below:

RefineMesh -i mesh.mvs -o mesh_refined.mvs

This usually occurs at the center of model where most of the details at.

[cdcseacave]

this looks really bad, never saw this before
can you share the problem dataset?

[pmoulon]

Seems like there is a lot of inverted facets (black triangles) at the end of ReconstructMesh.
I think it make the refineMesh process being very confused later on.

[mrbemani]

you can download the problem dataset from: http://www.smallworld-network.com.cn/img/upsidedownhouse.tar.gz

[mrbemani]

btw, if I rescale the photos down to 1024x768, the problem goes away, but the model loses most of its detail due to low resolution of the images.

[cdcseacave]

Thx, I'll have a look!
At what step did you rescale the images? I suggest to try using the full scale images for the entire process, except for the densification step (use --resolution-level 2 or more to scale down the images).

[mrbemani]

I manually rescaled the data set down to 1024x768, and used that to run the whole process, the problem goes away. After that, I tried 2048x1536, the refined model broke again.

[AchyutPujar]

What is there in .mvs file?